code: def addsitepackages(known_paths, prefixes=None):
      """Add site-packages to sys.path"""
      _trace("Processing global site-packages")
      for sitedir in getsitepackages(prefixes):
          if os.path.isdir(sitedir):
              addsitedir(sitedir, known_paths)
  
      return known_paths
  
imports: import sys
  import os
  import builtins
  import _sitebuiltins
  import io
label_desc: Use image node_id 15 for calling a global function with example usage: addsitepackages(known_paths, prefixes) and returns: known_paths